Originally Posted by wally2117
Thanks but I already had this one.
I drew that one for a guy with a 1983 F250 but other than the wire colors it should be wired like yours.
Originally Posted by wally2117
rear tank - full - sender reads about 18 ohms.
front tank - empty - sender reads about 70 ohms
The senders should read:
73 ohms Empty
22 ohms half a Tank
10 ohms Full Tank
Open wire (disconnected) from the gauge the gauge will read the same as it does with the Ignition Switch off, Below Empty.
Grounding the wire from the gauge the gauge will read more than full.